55487130776 has 192 divisors, whose sum is σ = 140750784000. Its totient is φ = 20218947840.

The previous prime is 55487130767. The next prime is 55487130821. The reversal of 55487130776 is 67703178455.

55487130776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6468026 + ... + 6476598.

It is an arithmetic number, because the mean of its divisors is an integer number (733077000).

Almost surely, 2^55487130776 is an apocalyptic number.

55487130776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55487130776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70375392000).

55487130776 is an abundant number, since it is smaller than the sum of its proper divisors (85263653224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55487130776 is a wasteful number, since it uses less digits than its factorization.

55487130776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8702 (or 8691 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 53.

The spelling of 55487130776 in words is "fifty-five billion, four hundred eighty-seven million, one hundred thirty thousand, seven hundred seventy-six".